A lifting device for rice processing

Abstract

This invention belongs to the field of rice production and transportation technology, specifically a lifting device for rice processing, comprising: a mobile base; a lifting box, which is mounted on the mobile base via a lifting assembly, driving the lifting box and the rice inside to rise or fall; a conveying auger rotatably mounted at the bottom of the lifting box for discharging the rice outwards; a filtering assembly, disposed inside the lifting box for filtering large particles of impurities from the rice; the filtering assembly includes a mounting plate with filter plates rotatably mounted on both sides of the mounting plate; and a driving assembly, disposed inside the box for driving the filtering assembly to vibrate up and down, thereby filtering the rice. This invention, by setting up a filtering assembly to filter out larger impurities from the rice and promptly discharge them, facilitates continuous operation and improves work efficiency.

Description

Technical Field

[0001] This invention belongs to the field of rice production and transportation technology, specifically a lifting device for rice processing. Background Technology

[0002] Rice, a staple food for most people in China, plays a vital role in both nutrition and the economy. Improving rice quality, increasing production efficiency, and ensuring a clean production environment have always been key concerns within the industry. To meet these needs, various lifting devices have emerged to optimize rice processing, particularly during lifting and transportation, ensuring the cleanliness and quality of the rice. Lifting devices, as crucial equipment in rice production and processing, play a vital role. Existing lifting devices are primarily used to move rice from one processing stage to the next. This process often encounters a series of problems, including the carrying of impurities and the dispersal of dust, which not only affect rice quality but can also impact the hygiene of the working environment. Therefore, effectively cleaning the rice, filtering impurities, and ensuring the continuous operation of the equipment have become core issues in the design of lifting devices.

[0003] Patent application CN119018652B discloses a rice lifting device for rice production and processing. The key technical features include: a movable frame; and a lifting frame fixedly installed at one end of the movable frame. A motor is fixedly installed on one side of the movable frame. The lifting frame has two symmetrical vertical slots, and a limit frame is slidably connected within the two vertical slots. This invention has a simple structure. Before the rice is lifted and transported, impurities and dust in the rice can be filtered through a multi-stage filtration mechanism. Simultaneously, the generated dust can be collected, improving the filtration effect and preventing any impact on rice quality, making it convenient for users.

[0004] However, the aforementioned technologies often have the following drawbacks: Although the primary filter plate of the above technologies can effectively remove excessively large impurities, due to design flaws, impurities often remain on the primary filter plate, making timely cleaning difficult. Over time, the accumulation of impurities on the filter plate leads to a decrease in its filtration efficiency and may even cause blockages, affecting the normal operation of the entire lifting device. This not only reduces the equipment's working efficiency but also increases the difficulty of manual cleaning, and in severe cases, may lead to production line shutdowns. Therefore, this invention provides a lifting device for rice processing. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by this invention to solve its technical problem is: a lifting device for rice processing, comprising:

[0007] Mobile base;

[0008] The lifting box is mounted on a mobile base via a lifting assembly. The lifting assembly drives the lifting box and the rice inside to rise or fall. A conveying auger is rotatably installed at the bottom of the lifting box to discharge the rice inside the box to the outside.

[0009] A filter assembly is installed inside the lifting box and is used to filter large particles of impurities in rice. The filter assembly includes a mounting plate, on which filter plates are rotatably mounted. Electromagnets are fixed on both sides of the mounting plate, and iron blocks that can attract each other to the electromagnets are fixed on the filter plates on both sides. Through slots are opened on both side walls of the lifting box, and the ends of the two filter plates away from the mounting plate extend into the through slots.

[0010] A drive component, located inside the housing, is used to drive the filter component to vibrate up and down, thereby filtering the rice.

[0011] Preferably, the drive assembly includes a second drive shaft rotatably mounted above the conveying auger, a first drive shaft fixed to the end of the conveying auger, the first drive shaft and the second drive shaft connected by a transmission belt and a transmission wheel, a cam fixed in the middle of the second drive shaft, a movable rod provided above the cam, a horizontal plate fixed in the middle of the lifting box, the movable rod slidingly passing through a through hole in the middle of the horizontal plate, the top end of the movable rod fixed to the bottom middle of the mounting plate, and a spring fixed below the horizontal plate to reset the movable rod.

[0012] Preferably, it also includes a dust collection assembly, which includes dust collection boxes symmetrically fixed on both sides of the lifting box. The through groove communicates with the inside of the dust collection box. A fan is rotatably mounted on the bottom of the dust collection box via a bearing. A vertical rod is fixed on the bottom of the fan. The vertical rod and the drive shaft are connected by a helical gear set. A filter screen is provided above the fan. A side plate is detachably mounted on the dust collection box.

[0013] Preferably, the lifting assembly includes a frame, a hydraulic cylinder is fixed in the middle of the frame, a connecting frame is fixed at the top of the telescopic rod of the hydraulic cylinder, and the lifting box is fixedly connected to the connecting frame.

[0014] Preferably, a second mounting plate is provided below the first mounting plate, and the second mounting plate is fixedly connected to the movable rod. The second mounting plate has baffles symmetrically inclined on both sides. Inside the box and below the baffles, there are two support rods fixed side by side. The bottom ends of the baffles are symmetrically and rotatably mounted with sliders 1, which slide on the support rods. The top ends of the baffles are rotatably mounted with sliders 2, which slide in the limiting grooves opened at the bottom of both ends of the second mounting plate. A spring 2 is provided between the two sliders 2.

[0015] Preferably, a support frame is fixed at an incline inside the dust collection box, the filter screen is installed on the top of the support frame, a vertical cylinder is fixed below the support frame, a positioning rod is fixed at the bottom of the filter screen, and the positioning rod is slidably inserted into the vertical cylinder.

[0016] Preferably, a sliding cavity is provided in the middle of the end of the support rod, a piston is slidably installed in the middle of the sliding cavity, a push block is fixed on one side of the slider, a sliding groove is provided below the end of the support rod, the top of the push block is slidably inserted into the sliding groove, the push block is fixedly connected to the piston through a connecting rod, and the sliding cavity is connected to the vertical cylinder through a connecting pipe.

[0017] Preferably, an inverted convex movable cavity is provided in the middle of the inner wall of the top of the through groove, a T-shaped movable plate is slidably installed in the middle of the movable cavity, and a spring is installed on the top of the movable plate.

[0018] Preferably, the bottom side wall of the lifting box is provided with a discharge port, which corresponds to the conveying auger, and a sealing plate is detachably installed on the outside of the discharge port.

[0019] The beneficial effects of this invention are as follows:

[0020] 1. The rice processing lifting device of the present invention involves an electromagnet attracting an iron block on a filter plate to bring the two filter plates into a horizontal position and tightly adhere to the bottom of a mounting plate. Rice to be processed is then poured onto the mounting plate, and the drive assembly is activated. The drive assembly controls the reciprocating motion of the mounting plate and the filter plate, causing the filter plate to vibrate. The rice passes through the sieve holes of the filter plate and falls freely to the bottom of the lifting box, while larger particles of impurities remain on the top of the filter plate, thus achieving rice sieving. After sieving, the electromagnet is de-energized, and under gravity, the end of the filter plate furthest from the mounting plate automatically tilts downwards, with the end of the filter plate overlapping the bottom of the trough. Impurities on the filter plate can roll down the slope into the trough and be discharged, allowing for timely cleaning of impurities on the filter plate, facilitating continuous operation, and improving work efficiency.

[0021] 2. The rice processing lifting device of the present invention addresses the issue that during rice sieving, dust and fine impurities are scattered inside the lifting box. The rotation of the drive shaft simultaneously drives the vertical rod and fan to rotate via a helical gear set. The fan continuously discharges air from inside the dust collection box, creating negative pressure inside. This negative pressure draws the dust and fine impurities scattered inside the lifting box into the dust collection box through a channel, preventing dust and fine impurities from affecting the quality of the rice. Furthermore, a filter screen is installed to block dust and impurities, protecting the fan and preventing damage. A detachable side plate facilitates cleaning of the filter screen and the inner wall of the dust collection box. Attached Figure Description

[0022] The invention will now be further described with reference to the accompanying drawings.

[0023] Figure 1 This is a perspective view of the present invention;

[0024] Figure 2 This is a cross-sectional view of the lifting box of the present invention;

[0025] Figure 3 This is a schematic diagram of the internal structure of the lifting box and dust collection box of the present invention;

[0026] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0027] Figure 5 yes Figure 3 Enlarged view at point B in the middle;

[0028] Figure 6 This is a partial structural cross-sectional view of the present invention;

[0029] Figure 7 yes Figure 6 Enlarged view of point C in the middle.

[0030] In the diagram: 1. Movable base; 2. Frame; 3. Hydraulic cylinder; 4. Connecting frame; 5. Lifting box; 6. Dust collection box; 7. Filter plate; 8. Mounting plate one; 9. Drive shaft one; 10. Conveying auger; 11. Sealing plate; 12. Drive shaft two; 13. Cam; 14. Movable rod; 15. Spring one; 16. Mounting plate two; 17. Baffle plate; 18. Vertical rod; 19. Fan; 20. Filter screen; 21. Through groove; 22. Movable plate; 23. Support rod; 24. Slider one; 25. Electromagnet; 26. Slider two; 27. Spring two; 28. Support frame; 29. ​​Vertical cylinder; 30. Connecting pipe; 31. Slide groove; 32. Push block; 33. Piston; 34. Slide cavity; 35. Positioning rod; 36. Spring three. Detailed Implementation

[0031] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0032] Example 1: As Figures 1 to 7 As shown in the figure, a rice processing lifting device according to an embodiment of the present invention includes:

[0033] Mobile base 1 is used to transfer the device to a designated location. In addition, a battery and a controller are installed on the mobile base 1. The battery provides power to the electrical equipment in the device, and the controller controls the operation of the relevant equipment. The connection method, output method and control method of the relevant equipment are all existing public technologies, which will not be described in detail here.

[0034] The lifting box 5 is mounted on the mobile base 1 via a lifting assembly. The lifting assembly drives the lifting box 5 and the rice inside to rise or fall. A conveying auger 10 is rotatably installed at the bottom of the lifting box 5 to discharge the rice inside the box outward.

[0035] A filter assembly is installed inside the lifting box 5 and is used to filter large particles of impurities in rice. The filter assembly includes a mounting plate 8, on which filter plates 7 are rotatably mounted. Electromagnets 25 are fixed on both sides of the mounting plate 8. Iron blocks that can attract each other to the electromagnets 25 are fixed on the filter plates 7 on both sides. Through slots 21 are opened on both side walls of the lifting box 5, and the ends of the two filter plates 7 away from the mounting plate 8 extend into the through slots 21.

[0036] A drive component, which is located inside the housing, is used to drive the filter component to vibrate up and down, thereby filtering the rice.

[0037] During operation, the electromagnet 25 is energized first, generating magnetic force. The electromagnet 25 attracts the iron block on the filter plate 7, so that the filter plates 7 on both sides are in a horizontal position and tightly attached to the bottom of the mounting plate 8. Then, the rice to be processed is poured on the mounting plate 8, and the drive assembly is started. The drive assembly controls the mounting plate 8 and the filter plate 7 to move up and down, so that the filter plate 7 shakes. The rice falls freely through the sieve holes of the filter plate 7 to the bottom of the lifting box 5. Larger particles of impurities in the rice are retained on the top of the filter plate 7, thus achieving the sieving of the rice.

[0038] The lifting assembly raises the lifting bucket, thus achieving the lifting effect, so that the rice can be transferred to the designated location as needed; finally, the conveying auger 10 is activated to push the rice out from the bottom of the lifting box 5, achieving automatic unloading.

[0039] After the screening is completed, the electromagnet 25 is de-energized, and the iron block separates from the electromagnet 25. At this time, under the action of gravity, the end of the filter plate 7 away from the mounting plate 8 automatically tilts downward, and the end of the filter plate 7 overlaps the bottom of the through groove 21. At this time, the impurities on the filter plate 7 can roll into the through groove and be discharged along the slope, so as to clean the impurities on the filter plate 7 in a timely manner, facilitate continuous work, and improve work efficiency. During this process, the drive component can move continuously so that the filter plate 7 can move continuously, thereby facilitating the discharge of impurities.

[0040] The drive assembly includes a second drive shaft 12 rotatably mounted above the conveying auger 10. A first drive shaft 9 is fixed to the end of the conveying auger 10. The first drive shaft 9 and the second drive shaft 12 are connected by a transmission belt and a transmission wheel. A cam 13 is fixed in the middle of the second drive shaft 12. A movable rod 14 is provided above the cam 13. A horizontal plate is fixed in the middle of the lifting box 5. The movable rod 14 slides through a through hole in the middle of the horizontal plate. The top of the movable rod 14 is fixed to the bottom middle of the mounting plate 8. A spring 15 is fixed below the horizontal plate to reset the movable rod 14.

[0041] During operation, the motor drives the drive shaft 9 and the conveying auger 10 to rotate, achieving automatic unloading. The drive shaft 12 rotates synchronously through the transmission wheel and transmission belt, which in turn drives the cam 13 to rotate. The cam 13 pushes the movable rod 14 to move up and down, which in turn drives the mounting plate 8 and the filter plate 7 to move up and down, so as to shake and screen the rice.

[0042] It also includes a dust collection assembly, which includes dust collection boxes 6 symmetrically fixed on both sides of the lifting box 5. The through groove 21 communicates with the inside of the dust collection box 6. A fan 19 is rotatably mounted on the bottom of the dust collection box 6 via a bearing. A vertical rod 18 is fixed on the bottom of the fan 19. The vertical rod 18 and the drive shaft 12 are connected by a helical gear set. A filter screen 20 is provided above the fan 19. A side plate is detachably mounted on the dust collection box 6.

[0043] During operation, dust and fine impurities will be scattered inside the lifting box 5 during rice sieving. The rotation of the drive shaft 12 simultaneously drives the vertical rod 18 and the fan 19 to rotate through the helical gear set. The fan 19 continuously discharges the air inside the dust collection box 6, creating a negative pressure inside the dust collection box 6. This allows the dust and fine impurities scattered inside the lifting box 5 to be sucked into the dust collection box 6 through the through groove 21, preventing dust and fine impurities from affecting the quality of the rice. In addition, a filter screen 20 is installed to block dust and impurities, protecting the fan 19 and preventing damage to it. A removable side plate facilitates cleaning of the filter screen 20 and the inner wall of the dust collection box 6.

[0044] The lifting assembly includes a frame 2, a hydraulic cylinder 3 fixed in the middle of the frame 2, a connecting frame 4 fixed at the top of the telescopic rod of the hydraulic cylinder 3, and the lifting box 5 fixedly connected to the connecting frame 4. During operation, the telescopic rod of the hydraulic cylinder 3 is controlled to extend so as to lift the lifting box 5 as needed, thereby lifting the rice to a specified height.

[0045] Below the first mounting plate 8, a second mounting plate 16 is provided. The second mounting plate 16 is fixedly connected to the movable rod 14. The second mounting plate 16 is symmetrically inclined with baffle plates 17 on both sides. Inside the box and below the baffle plates 17, two support rods 23 are fixed side by side. The bottom of the baffle plates 17 is symmetrically and rotatably mounted with sliders 24. The sliders 24 are slidably sleeved on the support rods 23. The top of the baffle plates 17 is rotatably mounted with sliders 26 on both sides. The sliders 26 are slidably set in the limiting grooves opened at the bottom of both ends of the second mounting plate 16. The middle of the two sliders 26 is provided with springs 27.

[0046] During operation, the rice passing through the filter plate 7 falls freely onto the baffle plate 17 by setting a baffle plate 17 at an angle below the filter plate 7. The rice collides with the baffle plate 17, which can further separate dust and fine impurities, causing the dust and fine impurities to fly up, making it easier to absorb the impurities through negative pressure suction later. When the movable plate 22 moves up and down, it drives the second mounting plate 16 to move up and down simultaneously, which in turn drives the baffle plates 17 on both sides to move. The bottom of the baffle plate 17 drives the first slider 24 to move back and forth along the support rod 23, and the top of the baffle plate 17 drives the second slider 26 to slide along the limiting groove 31 set on the second mounting plate 16, so that the baffle plate 17 shakes up and down to shake off the rice on the surface of the baffle plate 17, so that the rice can move smoothly to the bottom of the lifting box 5.

[0047] The dust collection box 6 has a support frame 28 fixed at an incline inside. The filter screen 20 is installed on the top of the support frame 28. A vertical cylinder 29 is fixed below the support frame 28. A positioning rod 35 is fixed at the bottom of the filter screen 20. The positioning rod 35 is slidably inserted into the vertical cylinder 29. During operation, the positioning rod 35 and the vertical cylinder 29 cooperate to facilitate the installation and removal of the filter screen 20.

[0048] A sliding cavity 34 is provided in the middle of the end of the support rod 23. A piston 33 is slidably installed in the middle of the sliding cavity 34. A push block 32 is fixed to the side of the slider 24. A sliding groove 31 is provided below the end of the support rod 23. The top of the push block 32 is slidably inserted into the sliding groove 31. The push block 32 is fixedly connected to the piston 33 through a connecting rod. The sliding cavity 34 is connected to the vertical cylinder 29 through a connecting pipe 30. During operation, the slider 24 moves up and down synchronously with the baffle plate 17 and reciprocates along the support rod 23. When the slider 24 approaches the vertical cylinder 29, the push block 32 pushes the piston 33 to move, and the air inside the sliding cavity 34 is pushed through the connecting pipe 30. The connector 30 is inserted into the vertical cylinder 29, pushing the positioning rod 35 and the filter screen 20 to move upward. When the slider 24 moves away from the vertical cylinder 29, it drives the push block 32 and the piston 33 to move in the opposite direction, thereby drawing air from inside the vertical cylinder 29 into the sliding cavity 34. At this time, it drives the positioning rod 35 and the filter screen 20 to move downward, causing the filter screen 20 to collide with the support frame 28, which in turn causes the filter screen 20 to vibrate. This causes the dust and impurities on the surface of the filter screen 20 to be shaken up and move downward along the inclined filter screen 20. This can prevent dust and impurities from accumulating on the surface of the filter screen 20 and causing the filter screen 20 to become clogged, so as to maintain the filter screen 20's good dust filtration effect.

[0049] An inverted convex movable cavity is formed in the middle of the inner wall of the top of the channel 21. A T-shaped movable plate 22 is slidably installed in the middle of the movable cavity. A spring 36 is installed on the top of the movable plate 22. During operation, the spring 36 pushes the movable plate 22 downward. When the filter plate 7 is in a horizontal position, the bottom end of the movable plate 22 is always in contact with the filter plate 7. In this way, during the up and down movement of the filter plate 7, the rice above the filter plate 7 is prevented from leaking out of the channel 21. The convex movable cavity can limit the distance that the movable plate 22 can descend. When the filter plate 7 is tilted downward, the bottom end of the movable plate 22 is not in contact with the filter plate 7. At this time, the impurities on the filter plate 7 can be discharged from the channel 21 along the inclined surface.

[0050] Example 2: Figure 2 As shown in the first embodiment, another embodiment of the present invention is as follows: a discharge port is provided on the bottom side wall of the lifting box 5, which corresponds to the conveying auger 10, and a sealing plate 11 is detachably installed on the outside of the discharge port; during operation, when unloading is required, the sealing plate 11 is opened, and the rice at the bottom of the lifting box 5 can be pushed out by the conveying auger 10 to achieve automatic unloading.

[0051] Working principle: When electromagnet 25 is energized, it generates magnetic force, attracting the iron block on filter plate 7 to ensure that both filter plates 7 are horizontal and tightly attached to the underside of mounting plate 8. Rice to be processed is then poured onto mounting plate 8, and the drive assembly is activated. The drive assembly controls the up-and-down reciprocating movement of mounting plate 8 and filter plate 7, causing the filter plate 7 to vibrate. The rice passes through the sieve holes of filter plate 7 and falls freely to the bottom of lifting box 5, while larger impurities remain at the top of filter plate 7, thus sieving the rice. The lifting assembly raises the lifting bucket, achieving a lifting effect to transfer the rice to a designated location as needed. The conveying auger 10 pushes the rice out from the bottom of lifting box 5, achieving automatic unloading.

[0052] Automatic unloading is achieved by rotating the drive shaft 9 and the conveying auger 10 driven by the motor. The drive shaft 12 is rotated synchronously through the transmission wheel and the transmission belt, which in turn drives the cam 13 to rotate. The cam 13 pushes the movable rod 14 to move up and down, which in turn drives the mounting plate 8 and the filter plate 7 to move up and down, so as to shake and screen the rice.

[0053] During the rice sieving process, dust and fine impurities will be scattered inside the lifting box 5. The rotation of the drive shaft 12 simultaneously drives the vertical rod 18 and the fan 19 to rotate through the helical gear set. The fan 19 continuously discharges the air inside the dust collection box 6, creating a negative pressure inside the dust collection box 6. This allows the dust and fine impurities scattered inside the lifting box 5 to be sucked into the dust collection box 6 through the through groove 21, preventing dust and fine impurities from affecting the quality of the rice. In addition, a filter screen 20 is installed to block dust and impurities, protecting the fan 19 and preventing damage to it. A removable side plate is provided to facilitate cleaning of the filter screen 20 and the inner wall of the dust collection box 6.

[0054] Slider 24 moves up and down synchronously with baffle 17 and reciprocates along support rod 23. When slider 24 approaches vertical cylinder 29, push block 32 pushes piston 33 to move, squeezing air from inside slide cavity 34 into vertical cylinder 29 through connecting pipe 30, pushing positioning rod 35 and filter screen 20 to move upward. When slider 24 moves away from vertical cylinder 29, push block 32 and piston 33 move in the opposite direction, thereby drawing air from inside vertical cylinder 29 into slide cavity 34. At this time, positioning rod 35 and filter screen 20 are driven to move downward, causing filter screen 20 to collide with support frame 28, which in turn causes filter screen 20 to vibrate. This causes dust and impurities on the surface of filter screen 20 to be shaken up and move downward along inclined filter screen 20. This can prevent dust and impurities from accumulating on the surface of filter screen 20 and causing filter screen 20 to become clogged, thus maintaining good dust filtration effect of filter screen 20.

[0055] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0056] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0057] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lifting device for rice processing, characterized in that: include: Mobile base (1); The lifting box (5) is installed above the mobile base (1) by a lifting component. The lifting box (5) and the rice inside are driven to rise or fall by the lifting component. A conveying auger (10) is rotatably installed at the bottom of the lifting box (5) to discharge the rice inside the lifting box (5) to the outside. The filter assembly is set inside the lifting box (5) and is used to filter large particles of impurities in rice. The filter assembly includes a mounting plate (8), on which filter plates (7) are rotatably mounted respectively. Electromagnets (25) are fixed on both sides of the mounting plate (8). Iron blocks that can attract each other to the electromagnets (25) are fixed on the filter plates (7) on both sides. Through slots (21) are opened on both sides of the side wall of the lifting box (5). The ends of the two filter plates (7) away from the mounting plate (8) extend into the through slots (21). The driving component is located inside the lifting box (5) and is used to drive the filter component to shake up and down to filter the rice. It also includes a dust collection assembly, which includes a dust collection box (6) symmetrically fixed on both sides of the lifting box (5). The through groove (21) is connected to the inside of the dust collection box (6). A fan (19) is rotatably mounted on the bottom of the dust collection box (6) through a bearing. A vertical rod (18) is fixed on the bottom of the fan (19). The vertical rod (18) and the second drive shaft (12) are connected by a helical gear set. A filter screen (20) is provided above the fan (19). A side plate is detachably installed on the dust collection box (6). The lifting assembly includes a frame (2), a hydraulic cylinder (3) is fixed in the middle of the frame (2), a connecting frame (4) is fixed at the top of the telescopic rod of the hydraulic cylinder (3), and the lifting box (5) is fixedly connected to the connecting frame (4). A second mounting plate (16) is provided below the first mounting plate (8). The second mounting plate (16) is fixedly connected to the movable rod (14). A baffle plate (17) is symmetrically inclined on both sides of the second mounting plate (16). Two support rods (23) are fixed side by side inside the lifting box (5) and below the baffle plate (17). A slider (24) is symmetrically rotated on both sides of the bottom end of the baffle plate (17). The slider (24) is slidably sleeved on the support rod (23). A slider (26) is rotatably installed on both sides of the top end of the baffle plate (17). The slider (26) is slidably installed in the limiting grooves opened at the bottom of both ends of the second mounting plate (16). A spring (27) is provided in the middle of the two sliders (26).

2. The rice processing lifting device according to claim 1, characterized in that: The drive assembly includes a second drive shaft (12) rotatably mounted above the conveying auger (10). The end of the conveying auger (10) is fixed with a first drive shaft (9). The first drive shaft (9) and the second drive shaft (12) are connected by a transmission belt and a transmission wheel. A cam (13) is fixed in the middle of the second drive shaft (12). A movable rod (14) is provided above the cam (13). A horizontal plate is fixed in the middle of the lifting box (5). The movable rod (14) slides through a through hole in the middle of the horizontal plate. The top of the movable rod (14) is fixed to the bottom middle of the mounting plate (8). A spring (15) is fixed below the horizontal plate to reset the movable rod (14).

3. The rice processing lifting device according to claim 1, characterized in that: The dust collection box (6) is fixed with a support frame (28) at an incline inside. The filter screen (20) is installed on the top of the support frame (28). A vertical cylinder (29) is fixed below the support frame (28). A positioning rod (35) is fixed at the bottom of the filter screen (20). The positioning rod (35) is sealed and slidably inserted into the vertical cylinder (29).

4. The rice processing lifting device according to claim 3, characterized in that: The support rod (23) has a sliding cavity (34) in the middle of its end. A piston (33) is slidably installed in the middle of the sliding cavity (34). A push block (32) is fixed on the side of the slider (24). A groove (31) is provided below the end of the support rod (23). The top of the push block (32) is slidably inserted into the groove (31). The push block (32) is fixedly connected to the piston (33) through a connecting rod. The sliding cavity (34) is connected to the vertical cylinder (29) through a connecting pipe (30).

5. The rice processing lifting device according to claim 1, characterized in that: The top inner wall of the through groove (21) has an inverted convex movable cavity in the middle, and a T-shaped movable plate (22) is slidably installed in the middle of the movable cavity. A spring (36) is installed on the top of the movable plate (22).

6. The rice processing lifting device according to claim 1, characterized in that: The bottom side wall of the lifting box (5) is provided with a discharge port, which corresponds to the conveying auger (10). A sealing plate (11) is detachably installed on the outside of the discharge port.

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